diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5Cmpio.c | 55 |
1 files changed, 18 insertions, 37 deletions
diff --git a/src/H5Cmpio.c b/src/H5Cmpio.c index 5297a96..f451671 100644 --- a/src/H5Cmpio.c +++ b/src/H5Cmpio.c @@ -1000,6 +1000,7 @@ H5C__collective_write(H5F_t *f) { H5AC_t *cache_ptr; H5FD_mpio_xfer_t orig_xfer_mode = H5FD_MPIO_COLLECTIVE; + void *base_buf; int count; int *length_array = NULL; MPI_Aint *buf_array = NULL; @@ -1009,6 +1010,7 @@ H5C__collective_write(H5F_t *f) MPI_Datatype ftype; hbool_t ftype_created = FALSE; int mpi_code; + char unused = 0; /* Unused, except for non-NULL pointer value */ herr_t ret_value = SUCCEED; FUNC_ENTER_STATIC @@ -1023,19 +1025,17 @@ H5C__collective_write(H5F_t *f) if(H5CX_get_io_xfer_mode(&orig_xfer_mode) < 0) HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "can't get MPI-I/O transfer mode") + /* Set transfer mode */ + if(H5CX_set_io_xfer_mode(H5FD_MPIO_COLLECTIVE) < 0) + HGOTO_ERROR(H5E_CACHE, H5E_CANTSET, FAIL, "can't set MPI-I/O transfer mode") + /* Get number of entries in collective write list */ count = (int)H5SL_count(cache_ptr->coll_write_list); if(count > 0) { - H5FD_mpio_xfer_t xfer_mode = H5FD_MPIO_COLLECTIVE; H5SL_node_t *node; H5C_cache_entry_t *entry_ptr; - void *base_buf; int i; - /* Set new transfer mode */ - if(H5CX_set_io_xfer_mode(xfer_mode) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTSET, FAIL, "can't set MPI-I/O transfer mode") - /* Allocate arrays */ if(NULL == (length_array = (int *)H5MM_malloc((size_t)count * sizeof(int))) ) HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "memory allocation failed for collective write table length array") @@ -1085,42 +1085,23 @@ H5C__collective_write(H5F_t *f) ftype_created = TRUE; if(MPI_SUCCESS != (mpi_code = MPI_Type_commit(&ftype))) HMPI_GOTO_ERROR(FAIL, "MPI_Type_commit failed", mpi_code) - - /* Pass buf type, file type to the file driver */ - if(H5CX_set_mpi_coll_datatypes(btype, ftype) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTSET, FAIL, "can't set MPI-I/O properties") - - /* Write data */ - if(H5F_block_write(f, H5FD_MEM_DEFAULT, (haddr_t)0, (size_t)1, base_buf) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to write entries collectively") - } /* end if */ else { - MPI_Status mpi_stat; - MPI_File mpi_fh_p; - MPI_File mpi_fh; + /* Pass trivial buf type, file type to the file driver */ + btype = MPI_BYTE; + ftype = MPI_BYTE; -/* This should be rewritten to call H5F_block_write, with the correct - * buffer and file datatypes (null ones). -QAK, 2018/02/21 - */ - if(H5F_get_mpi_handle(f, (MPI_File **)&mpi_fh_p) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, FAIL, "can't get mpi file handle") - - mpi_fh = *(MPI_File*)mpi_fh_p; - - /* just to match up with the 1st MPI_File_set_view from H5FD_mpio_write() */ - if(MPI_SUCCESS != (mpi_code = MPI_File_set_view(mpi_fh, (MPI_Offset)0, MPI_BYTE, MPI_BYTE, "native", MPI_INFO_NULL))) - HMPI_GOTO_ERROR(FAIL, "MPI_File_set_view failed", mpi_code) + /* Set non-NULL pointer for I/O operation */ + base_buf = &unused; + } /* end else */ - /* just to match up with MPI_File_write_at_all from H5FD_mpio_write() */ - HDmemset(&mpi_stat, 0, sizeof(MPI_Status)); - if(MPI_SUCCESS != (mpi_code = MPI_File_write_at_all(mpi_fh, (MPI_Offset)0, NULL, 0, MPI_BYTE, &mpi_stat))) - HMPI_GOTO_ERROR(FAIL, "MPI_File_write_at_all failed", mpi_code) + /* Pass buf type, file type to the file driver */ + if(H5CX_set_mpi_coll_datatypes(btype, ftype) < 0) + HGOTO_ERROR(H5E_CACHE, H5E_CANTSET, FAIL, "can't set MPI-I/O properties") - /* just to match up with the 2nd MPI_File_set_view (reset) in H5FD_mpio_write() */ - if(MPI_SUCCESS != (mpi_code = MPI_File_set_view(mpi_fh, (MPI_Offset)0, MPI_BYTE, MPI_BYTE, "native", MPI_INFO_NULL))) - HMPI_GOTO_ERROR(FAIL, "MPI_File_set_view failed", mpi_code) - } /* end else */ + /* Write data */ + if(H5F_block_write(f, H5FD_MEM_DEFAULT, (haddr_t)0, (size_t)1, base_buf) < 0) + HGOTO_ERROR(H5E_CACHE, H5E_WRITEERROR, FAIL, "unable to write entries collectively") done: /* Free arrays */ |